Mag tailswitch with judco switch

Hey guys I need lil help from anyone that messed around with a judco switch….I modded my mag D tailcap with a judco switch but both wires are black with no sign witch is neg or pos is there any way of telling which one is what

It doesn’t matter which wire. I have used many judco switches. You are either going to use it to complete the positive circuit or the negative circuit. Since it’s in a tail cap, you should be completing the negative circuit. I do One wire to the tailcap, the other to the spring, but the spring needs to be isolated from the tailcap, otherwise the spring makes the circuit and it’s on all the time, when you tighten the tail cap.

Thanks old-lumens now the trickey part is making something up so the spring is isolated from the tailcap so its not touching, and the main thing is to make it steerdy for the pressure of my battery’s